Sirius Satellite Radio captured 56 percent of satellite radio retail sales in September, the highest share in the company’s history, Sirius announced Oct. 19. More than 82,000 Sirius radios were sold during the month, a 93 percent increase over September 2004 and a 52 percent increase over August sales, the company said.

“This increase in retail market share is extraordinarily positive for Sirius, especially given that we are now about to enter the busiest time of the year for us at retail,” Sirius CEO Mel Karmazin, said in a statement.

In a separate news, Sirius announced the appointment of Martin Lee senior as vice president of marketing. Lee will be responsible for all aspects of Sirius brand marketing and will report to Scott Greenstein, president of entertainment and sports. Lee most recently was vice president of marketing at Olympus.